Cell Phone Forums got a chance to handle the DROID 4 at CES. It looks like a great update to the Droid 3.
Here's a quick rundown of the specs vs the Droid 3:
|Feature||Droid 4||Droid 3|
|OS||Android 2.3.5 (Ice Cream Sandwich later)||Will probably not be updated to ICS|
|Antenna||4g LTE CDMA||3g CDMA & GSM|
|Display||4-inch qHD||4-inch qHD|
|Processor||1.2GHz TI OMAP 4430 dual-core||1GHz dual-core|
|Battery||1785 mAh||1540 mAh|
|Talk Time||204 hours||300 hours|
|Stand-by Time||12.50 hours||9.16 hours|
The Droid 4 was updated to look a lot like a smaller Droid RAZR. The slide out keyboard signature of the original Droid still holds true and feels good in your hands. It is the same thickness (0.5" or 13mm) as the Droid 3, but has 4g LTE, double the RAM and a slightly faster dual-core processor. There will be a purple and white versions available when it launches. It will cost $199 on a two year agreement.
Motorola did a really good job updating the keyboard this time. Each button has a very stylish backlight, which only comes on when needed. The layout is almost identical, apart from moving the voice button to the tab sym position, moving the @, eliminating the search and alt buttons (the shift button now controls the alt keys), adding a dedicated caps lock, sym button, & dash and equal keys, and moving different characters up to the number row. (see pics below).
Update - here are some side by side comparison shots: